Release Java SDK

[tillrohrmann]

We want to release the Java SDK to our users. This issue tracks the open tasks that need to be completed.

Tasks

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1. [Kotlin] Throwing retryable errors in the handler code will generate an OutputStreamEntry, and not an ErrorMessage #116
   kotlin-api +1
   
2. Improve flow to setup lambdas #158
   aws-lambda-endpoint devex enhancement +3
   
3. Publish Java artifacts to maven central #147
   3 of 3
   umbrella +1
4. Test lambda service endpoint #35
   aws-lambda-endpoint testing +2
5. Remove blocking suffix from sdk-java-blocking module #163
   +0
   
6. Template gradle project #22
   +0
   
7. Add Java SDK quickstart documentation#177
   sdk-java +1
   
8. Add docs for Java SDK documentation#175
   sdk-java +1
   
9. Add Java SDK Tour of Restate documentation#176
   sdk-java +1
   
10. Generate getting started template Java as zip examples#40
    +0
    

[slinkydeveloper]

Done